EP1584839B1 - Torsional vibration damper - Google Patents

Torsional vibration damper Download PDF

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Publication number
EP1584839B1
EP1584839B1 EP20040008581 EP04008581A EP1584839B1 EP 1584839 B1 EP1584839 B1 EP 1584839B1 EP 20040008581 EP20040008581 EP 20040008581 EP 04008581 A EP04008581 A EP 04008581A EP 1584839 B1 EP1584839 B1 EP 1584839B1
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EP
European Patent Office
Prior art keywords
driver
torsional vibration
vibration damper
shoe
spring element
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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EP20040008581
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German (de)
French (fr)
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EP1584839A1 (en
Inventor
Norbert Bastel
Dietmar Strauss
Dirk Schmitt
Till Ebner
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BorgWarner Inc
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BorgWarner Inc
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Publication date
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Priority to DE200450005490 priority Critical patent/DE502004005490D1/en
Priority to EP20040008581 priority patent/EP1584839B1/en
Publication of EP1584839A1 publication Critical patent/EP1584839A1/en
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Publication of EP1584839B1 publication Critical patent/EP1584839B1/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/10—Suppression of vibrations in rotating systems by making use of members moving with the system
    • F16F15/12—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon
    • F16F15/131—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon the rotating system comprising two or more gyratory masses
    • F16F15/133—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon the rotating system comprising two or more gyratory masses using springs as elastic members, e.g. metallic springs
    • F16F15/134—Wound springs
    • F16F15/1343—Wound springs characterised by the spring mounting
    • F16F15/13453—Additional guiding means for springs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/10—Suppression of vibrations in rotating systems by making use of members moving with the system
    • F16F15/12—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon
    • F16F15/121—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon using springs as elastic members, e.g. metallic springs
    • F16F15/123—Wound springs
    • F16F15/1232—Wound springs characterised by the spring mounting
    • F16F15/1234—Additional guiding means for springs, e.g. for support along the body of springs that extend circumferentially over a significant length

Definitions

  • the invention relates to a torsional vibration damper having a drive-side primary element having at least one primary driver and a secondary output member having at least one secondary driver which are rotatable relative to one another by at least one spring element provided between one of the primary driver and one of the secondary drivers, and with the spring elements disposed at the front End shoes, wherein at least one of the end shoes is designed such that upon reaching a threshold relative rotational angle relative to the neutral position of at least one of the drivers, bypassing the at least one end shoe in direct contact with the spring element occurs.
  • Torsional vibration dampers or torsional vibration dampers are known in various variations and from various applications. In particular, they are provided in the automotive industry for the elastic coupling of internal combustion engine and drive train. In this way it should be prevented that vibrations are transmitted from the side of the internal combustion engine to the drive train or the transmission. Such transmission of vibrations is given in motor vehicle drives, especially in internal combustion engines with relatively few cylinders and at low speeds. Effective damping of such vibrations results in being able to run at lower engine speeds, which generally results in reduced fuel consumption and is thus beneficial both economically and ecologically.
  • Torsionsschwingungsdämpfer with a drive-side primary element and a driven side secondary element, which are coupled together via a spring means and limited to rotate about an axis of rotation against each other, are for example from EP 1 371 875 A1 or the DE 195 22 718 A1 known.
  • the primary element comprises a first follower referred to below as the primary driver; the secondary element comprises a second follower referred to below as a secondary driver.
  • the torque is transmitted from the primary element by means of the Primärmit ceremonies first on the spring means and from there to the Sekundmaschinemitsacrificing of the secondary element.
  • the spring device consists i.d.R. from one or more in the circumferential direction of the torsional vibration damper successively arranged spring elements, preferably coil springs or helical spring sets, which are optionally interconnected by sliding shoes, and are supported at both ends via end shoes against the respective driver. If there is a torque transmission from primary element to secondary element, then the described torque transmission is referred to as a train. If, on the other hand, the torque transmission is reversed from the secondary element to the primary element, then there is talk of thrust.
  • the drivers are provided with a boom which is designed such that when a clash of driver and shoe first meet the boom of the driver on the shoe passing directly on the spring element.
  • the movement of the driver is first slightly damped before it hits the shoe over a large area, so that the above-mentioned transfer noise is reduced, at least for small torques to be transmitted.
  • a disadvantage of this device is that the initial damping effect does not turn out strong enough when the driver is subjected to a large angular momentum or a large torque. In this case, transfer noise still occurs when the driver hits the stop.
  • the invention is thus based on the problem of providing a torsional vibration damper at low cost without additional components, in which transfer noise is avoided in the case of traction / thrust changes both in the case of large and small angular momenta or torques of the drivers.
  • the invention is based on the idea to provide the torsional vibration damper with end shoes, which are designed so that they continue to manage the spring elements, but at no time come directly into contact with the associated driver in the damping process, but this always directly preferably impinges on the end face of the respective spring element.
  • the spring elements dampen the impact movement of the driver, so that regardless of the angular momentum of the driver no transfer noise occur.
  • Such an end shoe is thus designed such that the at least one driver remains in direct contact with the spring element, as long as the threshold relative rotational angle is exceeded.
  • the corresponding driver may also be designed such that the at least one driver remains in direct contact with the spring element as long as the threshold relative rotational angle is exceeded.
  • the invention provides that the at least one end shoe has a recess through which the corresponding driver can be passed is, and which is dimensioned so that the driver during a damping process through this recess passes through the spring element, however, never comes into contact with the shoe.
  • the end shoe has an open structure perpendicular to the direction of damping. That is, the end face of the spring element covering the side surface of the shoe is not designed as an annular closed surface, but for example, U-shaped or V-shaped. In this way, the driver can be guided along the inner wall of the cavity formed by a front and a rear side window and penetrate the shoe over the entire surface.
  • the end shoe in question may also be formed perpendicular to the direction of rotation in cross-section L-shaped. Now, the corresponding driver is preferably guided past the one leg of the L-shape.
  • An advantageous development of the invention is to provide the at least one end shoe with at least one device that allows attachment of the shoe to the spring element.
  • this device is designed as a retaining lug can be clamped with the turns of at least one coil spring of the associated spring element. In this way it is prevented that the shoe is released during the damping operation of the spring element and the spring element loses its leadership.
  • the spring element consists of a plurality of different, coiled coil springs, in particular fastening devices can be provided, which connect the shoe with different coil springs.
  • the shoes are not attached to the spring elements, but to the drivers of the primary or the secondary element and provided the end shoes with at least one stop device for the associated spring element, which is preferably designed as a stop lug. These stop devices serve to transmit torque from the spring elements to the drivers provided with the end shoes.
  • An advantageous development of the invention is to provide the end shoe on its side facing away from the axis of rotation of the torsional vibration damper side with a sliding surface. This prevents - especially at a high speed of the primary element or secondary element - that due to centrifugal forces turns of the respective spring element are pressed outwards against the wall formed by curved side windows and the leadership of the spring elements or the driver betechnikstelligenden cavity and tilt there , Such tilting would have the consequence that only the suspension travel from the point of tilting to the end shoe, on which the driver impinges, would be available for the damping of the rotational movement. Vibration components that can not be damped by this reduced travel are transmitted undamped.
  • the lateral surface of the spring element facing side of the shoe at least partially surrounds the spring element, as it is z. B. at a End shoe with U-shaped cross section is the case. This results in an improved guidance of the spring element.
  • the end shoe and the optional sliding shoes are advantageously made of plastic.
  • this has the advantage of cost-effective manufacturability and, on the other hand, a low sliding friction on the contact sliding / sliding shoe can be produced in a simple manner with respect to the lateral surface of the secondary element.
  • FIGS. 1 and 2 show a torsional vibration damper 3 with a primary element in the form of a middle plate 26 and with a secondary element in the form of two side plates 24, 26 connected to one another in a rotationally fixed manner.
  • Around the center disc 26 are around in a cavity formed by the rear side window 24 and by the front side window 25 consisting of several spring sets 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 existing spring elements.
  • Each of the spring sets 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 consists in the present embodiment of two nested coil springs.
  • the spring sets 5, 6, 7, 8, 9, 10 and 11, 12, 13, 14, 15, 16 are spacers, so-called sliding shoes 28, 29, 30, 31, 32 and 33, 34, 35, 36, 37 each one spring element forming consecutively lined up.
  • an end shoe 18a, 18b, 18c, 18d is arranged.
  • the end faces of the end shoes 18a, 18b, 18c, 18d are seated in a neutral position in each case on a driver 17a, 17a 'which is designed in two parts here; 17b, 17b 'of the two side windows 24, 25 existing secondary element 24, 25 on.
  • the end shoes 18a, 18b, 18c, 18d are U-shaped at their end faces. The two legs of the U-shape sit in a substantially positive fit on the respective driver, consisting of the two Operamit proceedings 17a, 17a 'and 17b, 17b', of the secondary element.
  • the gap between the two legs of the U-shape of the respective end shoe 18a, 18b, 18c, 18d is just chosen so large that the driver 19b of the primary element 26 in a relative rotation between the primary and secondary element 24, 25, 26 in a direction of rotation directly meets the spring set 14 without touching the end shoe 18b and that at the same time the driver 19a of the primary element 26 directly strikes the spring set 10, without touching the end shoe 18c.
  • the respective end shoes 18a, 18b, 18c, 18d have, on the outer circumference, sliding surfaces 27a, 27b, 27c, 27d which bear against the inner wall of a cylindrical region of one of the side disks 24 (or 25).
  • the sliding shoes 28, 29, 30, 31, 32, 33, 34, 35, 36, 37 are formed. These are also supported on the outer circumference side against the inner wall of the cylinder of the corresponding side window 24 (or 25).
  • this embodiment shows sliding surface dimensions that are purely optional. Of course, in particular their circumferential extent can also be chosen shorter, if a go to block the springs due to the torques occurring either not possible or destruction of the springs is not expected.
  • the end shoes for a torsional vibration damper are not U-shaped, but adapted in another way to the torsional vibration damper.
  • FIG. 3 shows a perspective view of such an end shoe 218.
  • the end shoe 218 is provided with two stop lugs 211, 212, which form abutment points for the end face of the associated spring element. They prevent the spring element slides with its front side through the end face of the shoe 218 forward and the spring element loses its leadership.
  • the end shoe 218 On the side facing away from the axis of rotation of the torsional vibration damper, the end shoe 218 has a sliding surface 227, on the inside of which the spring element slides along.
  • this sliding surface 227 is preferably dimensioned in the circumferential direction of the torsional vibration damper that at maximum compression of the spring elements whose ends are further shielded by the sliding surface 227 from the radially outer part of the cavity, so that tilting of the spring coils on the cavity wall and the associated reduction the damping effect is avoided.
  • the end shoe 218 of Figure 3 is placed. If necessary, it can also be attached.
  • Its end face is designed in a U-shape, so that the driver 219 of the primary element 210 can reach through the end shoe 218 without coming into contact therewith. Instead, the driver 219 hits directly on the spring element 214, so that no transfer noise occurs.
  • the cavity in which the spring elements move is formed by joining the front side plate 225 and the rear side plate 224.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Vibration Dampers (AREA)

Description

Die Erfindung betrifft einen Torsionsschwingungsdämpfer mit einem mindestens einen Primärmitnehmer aufweisenden antriebsseitigen Primärelement und einem mindestens einen Sekundärmitnehmer aufweisenden abtriebsseitigen Sekundärelement, die entgegen mindestens einem zwischen einem der Primärmitnehmer und einem der Sekundärmitnehmer vorgesehenen Federelement um eine Neutralposition relativ zueinander verdrehbar sind, sowie mit stirnseitig der Federelemente angeordneten Endschuhen, wobei wenigstens einer der Endschuhe derart ausgebildet ist, dass bei Erreichen eines Schwellen-Relativdrehwinkels gegenüber der Neutralposition wenigstens einer der Mitnehmer unter Umgehung des wenigstens einen Endschuhs in direktem Kontakt mit dem Federelement tritt.The invention relates to a torsional vibration damper having a drive-side primary element having at least one primary driver and a secondary output member having at least one secondary driver which are rotatable relative to one another by at least one spring element provided between one of the primary driver and one of the secondary drivers, and with the spring elements disposed at the front End shoes, wherein at least one of the end shoes is designed such that upon reaching a threshold relative rotational angle relative to the neutral position of at least one of the drivers, bypassing the at least one end shoe in direct contact with the spring element occurs.

Torsionsschwingungsdämpfer oder Drehschwingungsdämpfer sind in unterschiedlichen Variationen und aus verschiedenen Anwendungen bekannt. Insbesondere sind sie im Kraftfahrzeugbau zur elastischen Kopplung von Verbrennungskraftmaschine und Antriebsstrang vorgesehen. Auf diese Weise soll verhindert werden, dass Schwingungen von der Seite der Verbrennungskraftmaschine auf den Antriebsstrang bzw. das Getriebe übertragen werden. Eine derartige Übertragung der Schwingungen ist bei Kraftfahrzeugantrieben vor allen Dingen bei Verbrennungskraftmaschinen mit vergleichsweise wenig Zylindern und bei niedrigen Drehzahlen gegeben. Eine effektive Dämpfung derartiger Schwingungen führt dazu, dass mit niedrigeren Drehzahlen der Verbrennungskraftmaschine gefahren werden kann, was im Allgemeinen einen verringerten Kraftstoffverbrauch mit sich bringt und somit sowohl ökonomisch als auch ökologisch von Vorteil ist.Torsional vibration dampers or torsional vibration dampers are known in various variations and from various applications. In particular, they are provided in the automotive industry for the elastic coupling of internal combustion engine and drive train. In this way it should be prevented that vibrations are transmitted from the side of the internal combustion engine to the drive train or the transmission. Such transmission of vibrations is given in motor vehicle drives, especially in internal combustion engines with relatively few cylinders and at low speeds. Effective damping of such vibrations results in being able to run at lower engine speeds, which generally results in reduced fuel consumption and is thus beneficial both economically and ecologically.

Torsionsschwingungsdämpfer mit einem antriebsseitigen Primärelement und einem abtriebsseitigen Sekundärelement, welche über eine Federeinrichtung miteinander gekoppelt und um eine Rotationsachse begrenzt gegeneinander verdrehbar sind, sind beispielsweise aus der EP 1 371 875 A1 oder der DE 195 22 718 A1 bekannt. Das Primärelement umfasst einen ersten nachfolgend als Primärmitnehmer bezeichneten Mitnehmer; das Sekundärelement umfasst einen zweiten nachfolgend als Sekundärmitnehmer bezeichneten Mitnehmer. Das Drehmoment wird vom Primärelement mittels des Primärmitnehmers zunächst auf die Federeinrichtung und von dort auf den Sekundärmitnehmer des Sekundärelements übertragen.Torsionsschwingungsdämpfer with a drive-side primary element and a driven side secondary element, which are coupled together via a spring means and limited to rotate about an axis of rotation against each other, are for example from EP 1 371 875 A1 or the DE 195 22 718 A1 known. The primary element comprises a first follower referred to below as the primary driver; the secondary element comprises a second follower referred to below as a secondary driver. The torque is transmitted from the primary element by means of the Primärmitnehmers first on the spring means and from there to the Sekundärmitnehmer of the secondary element.

Die Federeinrichtung besteht i.d.R. aus einem oder mehreren in Umfangsrichtung des Torsionsschwingungsdämpfers hintereinander angeordneten Federelementen, vorzugsweise Schraubenfedern bzw. Schraubenfedersätzen, die gegebenenfalls durch Gleitschuhe miteinander verbunden sind, und beidendseitig über Endschuhe gegen die jeweiligen Mitnehmer abgestützt sind. Erfolgt eine Momentenübertragung von Primärelement zum Sekundärelement, so wird die beschriebene Drehmomentübertragung als Zug bezeichnet. Erfolgt die Drehmomentübertragung hingegen anders herum vom Sekundärelement auf das Primärelement, so ist von Schub die Rede.The spring device consists i.d.R. from one or more in the circumferential direction of the torsional vibration damper successively arranged spring elements, preferably coil springs or helical spring sets, which are optionally interconnected by sliding shoes, and are supported at both ends via end shoes against the respective driver. If there is a torque transmission from primary element to secondary element, then the described torque transmission is referred to as a train. If, on the other hand, the torque transmission is reversed from the secondary element to the primary element, then there is talk of thrust.

Es hat sich gezeigt, dass bei Zug-/Schubwechsel, insbesondere unter Niedriglastbedingungen, ein Übergabegeräusch hörbar ist. Dieses ist darauf zurückzuführen, dass die Mitnehmer des Primär- bzw. Sekundärelements bei Zug-/Schubwechsel auf die die Federelemente abstützenden Endschuhe schlagen, wobei das angeführte Übergabegeräusch entsteht.It has been shown that a transfer noise is audible in train / thrust change, especially under low load conditions. This is due to the fact that the driver of the primary or secondary element hit in train / thrust change on the spring elements supporting the end shoes, the cited transfer noise arises.

In der DE 101 33 694 A1 wurden aus diesem Grund zusätzliche Federelemente zwischen den Endschuhen und den Mitnehmern angebracht, um deren Aufeinanderschlagen und die damit verbundene Geräuschentwicklung zu vermeiden. Verglichen mit der ursprünglichen Vorrichtung müssen allerdings diese zusätzlichen Federelemente eingesetzt und fixiert werden, was mit höheren Kosten verbunden ist.In the DE 101 33 694 A1 For this reason, additional spring elements were installed between the end shoes and the drivers in order to avoid their stacking and the associated noise. Compared to the original device, however, these additional spring elements must be used and fixed, which is associated with higher costs.

Hingegen wird in der DE 199 58 814 A1 , von der Erfindung ausgeht, auf derartige zusätzliche Federelemente verzichtet und statt dessen der an der Stirnseite des jeweiligen Federelements anliegende Endschuh so gestaltet, dass dieser die Stirnseite des Federelements nicht vollständig abdeckt. Weiter sind die Mitnehmer mit einem Ausleger versehen, der derart gestaltet ist, dass bei einem Aufeinandertreffen von Mitnehmer und Endschuh zunächst der Ausleger des Mitnehmers an dem Endschuh vorbei direkt auf das Federelement trifft. Hierdurch wird die Bewegung des Mitnehmers zunächst etwas gedämpft, ehe er großflächig auf den Endschuh auftrifft, so dass zumindest bei kleinen zu übertragenden Drehmomenten die oben angeführten Übergabegeräusche verringert werden. Nachteilig bei dieser Vorrichtung ist, dass der anfängliche Dämpfungseffekt nicht stark genug ausfällt, wenn der Mitnehmer mit einem großen Drehimpuls bzw. einem großen Drehmoment beaufschlagt ist. In diesem Fall treten beim Auftreffen des Mitnehmers auf den Anschlag weiterhin Übergabegeräusche auf.On the other hand, in the DE 199 58 814 A1 , Based on the invention dispensed with such additional spring elements and instead of the voltage applied to the end face of the respective spring element shoe designed so that it does not completely cover the end face of the spring element. Next, the drivers are provided with a boom which is designed such that when a clash of driver and shoe first meet the boom of the driver on the shoe passing directly on the spring element. As a result, the movement of the driver is first slightly damped before it hits the shoe over a large area, so that the above-mentioned transfer noise is reduced, at least for small torques to be transmitted. A disadvantage of this device is that the initial damping effect does not turn out strong enough when the driver is subjected to a large angular momentum or a large torque. In this case, transfer noise still occurs when the driver hits the stop.

Der Erfindung liegt somit das Problem zu Grunde, ohne zusätzliche Bauelemente kostengünstig einen Torsionsschwingungsdämpfer zur Verfügung zu stellen, in welchem Übergabegeräusche bei Zug-/Schubwechseln sowohl bei großen wie auch kleinen Drehimpulsen bzw. Drehmomenten der Mitnehmer vermieden werden.The invention is thus based on the problem of providing a torsional vibration damper at low cost without additional components, in which transfer noise is avoided in the case of traction / thrust changes both in the case of large and small angular momenta or torques of the drivers.

Dieses Problem wird erfindungsgemäß gelöst durch einen Torsionsschwingungsdämpfer mit den Merkmalen des Anspruchs 1.This problem is solved according to the invention by a torsional vibration damper having the features of claim 1.

Vorteilhafte Ausführungen und Weiterbildungen der Erfindung sind in den Unteransprüchen angegeben.Advantageous embodiments and further developments of the invention are specified in the subclaims.

Der Erfindung liegt die Idee zu Grunde, den Torsionsschwingungsdämpfer mit Endschuhen zu versehen, die so gestaltet sind, dass sie weiterhin die Führung der Federelemente bewerkstelligen, jedoch zu keiner Zeit des Dämpfungsvorgangs direkt mit dem zugehörigen Mitnehmer in Kontakt kommen, sondern dieser statt dessen stets unmittelbar vorzugsweise auf die Stirnseite des jeweiligen Federelements auftrifft. Dabei dämpfen die Federelemente die Aufschlagbewegung der Mitnehmer, so dass unabhängig vom Drehimpuls der Mitnehmer keine Übergabegeräusche auftreten.The invention is based on the idea to provide the torsional vibration damper with end shoes, which are designed so that they continue to manage the spring elements, but at no time come directly into contact with the associated driver in the damping process, but this always directly preferably impinges on the end face of the respective spring element. The spring elements dampen the impact movement of the driver, so that regardless of the angular momentum of the driver no transfer noise occur.

Ein derartiger Endschuh ist also derart ausgebildet, dass der wenigstens eine Mitnehmer in direktem Kontakt mit dem Federelement verbleibt, solange der Schwellen-Relativdrehwinkel überschritten ist. Alternativ oder zusätzlich kann auch der entsprechende Mitnehmer derart ausgebildet sein, dass der wenigstens eine Mitnehmer in direktem Kontakt mit dem Federelement verbleibt, solange der Schwellen-Relativdrehwinkel überschritten ist. Es findet folglich stets eine Drehmomentübertragung vom Mitnehmer auf das Federelement statt, anders als bei der DE 199 58 814 A1 , wo ab einem Schwellen-Relativdrehwinkel eine Drehmomentenübertragung vom Mitnehmer auf den Endschuh und vom Endschuh auf das Federelement stattfindet.Such an end shoe is thus designed such that the at least one driver remains in direct contact with the spring element, as long as the threshold relative rotational angle is exceeded. Alternatively or additionally, the corresponding driver may also be designed such that the at least one driver remains in direct contact with the spring element as long as the threshold relative rotational angle is exceeded. There is therefore always a torque transfer from the driver to the spring element, unlike the DE 199 58 814 A1 , where from a threshold relative rotation angle, a torque transmission from the driver to the end shoe and the shoe takes place on the spring element.

Bei einer ersten Ausführungsvariante ist erfindungsgemäß vorgesehen, dass der wenigstens eine Endschuh eine Ausnehmung aufweist, durch welche der entsprechende Mitnehmer hindurchführbar ist, und welche so bemessen ist, dass der Mitnehmer während eines Dämpfungsvorgangs durch diese Aussparung hindurch auf das Federelement trifft, mit dem Endschuh jedoch nie in Berührung kommt.In a first embodiment, the invention provides that the at least one end shoe has a recess through which the corresponding driver can be passed is, and which is dimensioned so that the driver during a damping process through this recess passes through the spring element, however, never comes into contact with the shoe.

In einer besonders vorteilhaften Ausführung der Erfindung weist der Endschuh senkrecht zur Dämpfungsrichtung eine offene Struktur auf. Das heißt die die Stirnseite des Federelements bedeckende Seitenfläche des Endschuhs ist nicht als ringförmig geschlossene Fläche ausgeführt, sondern beispielsweise U- oder V-förmig ausgebildet. Auf diese Weise kann der Mitnehmer entlang der Innenwandung des durch eine vordere und eine hintere Seitenscheibe gebildeten Hohlraums geführt werden und den Endschuh ganzflächig durchdringen.In a particularly advantageous embodiment of the invention, the end shoe has an open structure perpendicular to the direction of damping. That is, the end face of the spring element covering the side surface of the shoe is not designed as an annular closed surface, but for example, U-shaped or V-shaped. In this way, the driver can be guided along the inner wall of the cavity formed by a front and a rear side window and penetrate the shoe over the entire surface.

Der in Rede stehende Endschuh kann auch senkrecht zur Drehrichtung im Querschnitt L-förmig ausgebildet sein. Jetzt wird der entsprechende Mitnehmer vorzugsweise an dem einen Schenkel der L-Form vorbeigeführt.The end shoe in question may also be formed perpendicular to the direction of rotation in cross-section L-shaped. Now, the corresponding driver is preferably guided past the one leg of the L-shape.

Eine vorteilhafte Weiterbildung der Erfindung besteht darin, den wenigstens einen Endschuh mit mindestens einer Vorrichtung zu versehen, die eine Befestigung des Endschuhs am Federelement ermöglicht. Vorzugsweise ist diese Vorrichtung als Haltenase ausgeführt, mit der Windungen mindestens einer Schraubenfeder des zugehörigen Federelements verklemmbar sind. Auf diese Weise wird verhindert, dass sich der Endschuh während des Dämpfungsbetriebs vom Federelement löst und das Federelement seine Führung verliert. Sofern das Federelement aus mehreren verschiedenen, ineinander angeordneten Schraubenfedern besteht, können insbesondere Befestigungsvorrichtungen vorgesehen werden, die den Endschuh mit unterschiedlichen Schraubenfedern verbinden.An advantageous development of the invention is to provide the at least one end shoe with at least one device that allows attachment of the shoe to the spring element. Preferably, this device is designed as a retaining lug can be clamped with the turns of at least one coil spring of the associated spring element. In this way it is prevented that the shoe is released during the damping operation of the spring element and the spring element loses its leadership. If the spring element consists of a plurality of different, coiled coil springs, in particular fastening devices can be provided, which connect the shoe with different coil springs.

In einer bevorzugten Ausführung der Erfindung werden die Endschuhe nicht an den Federelementen, sondern an den Mitnehmern des Primär- oder des Sekundärelements befestigt und die Endschuhe mit jeweils mindestens einer Anschlagvorrichtung für das zugehörige Federelement versehen, die vorzugsweise als Anschlagnase ausgeführt ist. Diese Anschlagvorrichtungen dienen der Drehmomentübertragung von den Federelementen auf die mit den Endschuhen versehenen Mitnehmer.In a preferred embodiment of the invention, the shoes are not attached to the spring elements, but to the drivers of the primary or the secondary element and provided the end shoes with at least one stop device for the associated spring element, which is preferably designed as a stop lug. These stop devices serve to transmit torque from the spring elements to the drivers provided with the end shoes.

Eine vorteilhafte Weiterbildung der Erfindung besteht darin, den Endschuh an seiner der Rotationsachse des Torsionsschwingungsdämpfers abgewandten Seite mit einer Gleitfläche zu versehen. Diese verhindert - vor allem bei einer hohen Drehzahl des Primärelements bzw. Sekundärelements - dass auf Grund von Zentrifugalkräften Windungen des jeweiligen Federelements nach außen gegen die Wandung des durch gewölbte Seitenscheiben gebildeten und die Führung der Federelemente bzw. der Mitnehmer bewerkstelligenden Hohlraums gedrückt werden und dort verkanten. Ein solches Verkanten hätte zur Folge, dass für die Dämpfung der Drehbewegung nur noch der Federweg von der Stelle des Verkantens bis zum Endschuh, auf welchen der Mitnehmer auftrifft, zur Verfügung stünde. Schwingungsanteile, die über diesen reduzierten Federweg nicht gedämpft werden können, werden ungedämpft übertragen.An advantageous development of the invention is to provide the end shoe on its side facing away from the axis of rotation of the torsional vibration damper side with a sliding surface. This prevents - especially at a high speed of the primary element or secondary element - that due to centrifugal forces turns of the respective spring element are pressed outwards against the wall formed by curved side windows and the leadership of the spring elements or the driver bewerkstelligenden cavity and tilt there , Such tilting would have the consequence that only the suspension travel from the point of tilting to the end shoe, on which the driver impinges, would be available for the damping of the rotational movement. Vibration components that can not be damped by this reduced travel are transmitted undamped.

Es ist vorteilhaft, die Gleitflächen der Endschuhe und gegebenenfalls vorhandener Gleitschuhe in Umfangsrichtung des Torsionsschwingungsdämpfers so weit auszudehnen, dass verhindert wird, dass die Federelemente auf Block gehen.It is advantageous to extend the sliding surfaces of the shoes and optionally existing shoes in the circumferential direction of the torsional vibration damper so far that prevents the spring elements go to block.

Darüber hinaus ist es von Vorteil, wenn die der Mantelfläche des Federelements zugewandte Seite des Endschuhs das Federelement wenigstens teilweise umschließt, wie es z. B. bei einem Endschuh mit U-förmigem Querschnitt der Fall ist. Hierdurch ergibt sich eine verbesserte Führung des Federelements.Moreover, it is advantageous if the lateral surface of the spring element facing side of the shoe at least partially surrounds the spring element, as it is z. B. at a End shoe with U-shaped cross section is the case. This results in an improved guidance of the spring element.

Des Weiteren wird der Endschuh und die gegebenenfalls vorhandenen Gleitschuhe in vorteilhafter Weise aus Kunststoff gefertigt. Dies hat zum einen den Vorteil der kostengünstigen Herstellbarkeit, zum anderen lässt sich in einfacher Weise eine geringe Gleitreibung am Kontakt Gleit-/Endschuh zur Mantelfläche des Sekundärelements herstellen.Furthermore, the end shoe and the optional sliding shoes are advantageously made of plastic. On the one hand, this has the advantage of cost-effective manufacturability and, on the other hand, a low sliding friction on the contact sliding / sliding shoe can be produced in a simple manner with respect to the lateral surface of the secondary element.

Im Folgenden wird die Erfindung anhand von Figuren näher erläutert. Es zeigen im Einzelnen:

Figur 1
einen Ausschnitt aus einem Torsionsschwingungsdämpfer mit einem ersten Ausführungsbeispiel erfindungsgemäß ausgebildeter Endschuhe,
Figur 2
den Torsionsschwingungsdämpfer gemäß Figur 1 in Explosionsdarstellung,
Figur 3
ein zweites Ausführungsbeispiel eines erfindungsgemäß ausgebildeten Endschuhs für einen Torsionsschwingungsdämpfer,
Figur 4
einen Querschnitt durch einen Torsionsschwingungsdämpfer mit Endschuhen gemäß der Figur 3.
In the following the invention will be explained in more detail with reference to figures. They show in detail:
FIG. 1
a detail of a torsional vibration damper with a first embodiment of the invention trained in the end shoes,
FIG. 2
the torsional vibration damper according to Figure 1 in an exploded view,
FIG. 3
A second embodiment of an inventively designed end shoe for a torsional vibration damper,
FIG. 4
a cross section through a torsional vibration damper with end shoes according to the figure 3.

In den Figuren 1 und 2 ist ein Torsionsschwingungsdämpfer 3 mit einem Primärelement in Form einer Mittelscheibe 26 und mit einem Sekundärelement in Form zweier drehfest miteinander verbundener Seitenscheiben 24, 26 dargestellt. Um die Mittelscheibe 26 herum sind in einem durch die hintere Seitenscheibe 24 und durch die vordere Seitenscheibe 25 gebildeten Hohlraum aus mehreren Federsätzen 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 bestehende Federelemente angeordnet. Jeder der Federsätze 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 besteht im vorliegenden Ausführungsbeispiel aus zwei ineinander liegenden Schraubenfedern. Die Federsätze 5, 6, 7, 8, 9, 10 sowie 11, 12, 13, 14, 15, 16 sind durch Abstandshalter, sogenannte Gleitschuhe 28, 29, 30, 31, 32 sowie 33, 34, 35, 36, 37 jeweils ein Federelement bildend hintereinander gereiht. Am jeweiligen Ende eines Federelements ist ein Endschuh 18a, 18b, 18c, 18d angeordnet.FIGS. 1 and 2 show a torsional vibration damper 3 with a primary element in the form of a middle plate 26 and with a secondary element in the form of two side plates 24, 26 connected to one another in a rotationally fixed manner. Around the center disc 26 are around in a cavity formed by the rear side window 24 and by the front side window 25 consisting of several spring sets 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 existing spring elements. Each of the spring sets 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 consists in the present embodiment of two nested coil springs. The spring sets 5, 6, 7, 8, 9, 10 and 11, 12, 13, 14, 15, 16 are spacers, so-called sliding shoes 28, 29, 30, 31, 32 and 33, 34, 35, 36, 37 each one spring element forming consecutively lined up. At the respective end of a spring element, an end shoe 18a, 18b, 18c, 18d is arranged.

Die Stirnflächen der Endschuhe 18a, 18b, 18c, 18d sitzen in einer Neutralstellung jeweils an einem hier zweiteilig ausgeführten Mitnehmer 17a, 17a'; 17b, 17b' des aus zwei Seitenscheiben 24, 25 bestehenden Sekundärelements 24, 25 auf. Die Endschuhe 18a, 18b, 18c, 18d sind an ihren Stirnseiten U-förmig ausgeführt. Die beiden Schenkel der U-Form sitzen dabei im Wesentlichen formschlüssig auf dem jeweiligen Mitnehmer, bestehend aus den beiden Teilmitnehmern 17a, 17a' bzw. 17b, 17b', des Sekundärelements auf.The end faces of the end shoes 18a, 18b, 18c, 18d are seated in a neutral position in each case on a driver 17a, 17a 'which is designed in two parts here; 17b, 17b 'of the two side windows 24, 25 existing secondary element 24, 25 on. The end shoes 18a, 18b, 18c, 18d are U-shaped at their end faces. The two legs of the U-shape sit in a substantially positive fit on the respective driver, consisting of the two Teilmitnehmer 17a, 17a 'and 17b, 17b', of the secondary element.

Der Zwischenraum zwischen den beiden Schenkeln der U-Form des jeweiligen Endschuhs 18a, 18b, 18c, 18d ist gerade so groß gewählt, dass der Mitnehmer 19b des Primärelements 26 bei einer Relativverdrehung zwischen Primär- und Sekundärelement 24, 25, 26 in eine Drehrichtung direkt auf den Federsatz 14 trifft, ohne den Endschuh 18b zu berühren und dass gleichzeitig der Mitnehmer 19a des Primärelements 26 unmittelbar auf den Federsatz 10 trifft, ohne den Endschuh 18c zu berühren.The gap between the two legs of the U-shape of the respective end shoe 18a, 18b, 18c, 18d is just chosen so large that the driver 19b of the primary element 26 in a relative rotation between the primary and secondary element 24, 25, 26 in a direction of rotation directly meets the spring set 14 without touching the end shoe 18b and that at the same time the driver 19a of the primary element 26 directly strikes the spring set 10, without touching the end shoe 18c.

Bei einer Relativverdrehung zwischen Primär- und Sekundärelement 24, 25, 26 in die andere Drehrichtung trifft der Mitnehmer 19b des Primärelements 26 unmittelbar auf den Federsatz 5, ohne den Endschuh 18a zu berühren. Gleichzeitig trifft der Mitnehmer 19a des Primärelements 26 auf den Federsatz 11, ohne den Endschuh 18d zu berühren.In a relative rotation between the primary and secondary elements 24, 25, 26 in the other direction of rotation of the driver 19b of the primary element 26 meets directly on the spring set 5, without touching the end shoe 18a. At the same time, the driver 19a of the primary element 26 strikes the spring assembly 11 without touching the end shoe 18d.

Durch diese Maßnahme wird verhindert, dass Übergabegeräusche entstehen.This measure prevents transfer noises.

Der Zeichnung ist weiterhin zu entnehmen, dass die jeweiligen Endschuhe 18a, 18b, 18c, 18d außenumfangseitig Gleitflächen 27a, 27b, 27c, 27d aufweisen, welche sich gegen die Innenwandung eines zylinderförmigen Bereichs einer der Seitenscheiben 24 (oder 25) abstützen. In gleicher Weise wie die Endschuhe 18a, 18b, 18c, 18d sind auch die Gleitschuhe 28, 29, 30, 31, 32, 33, 34, 35, 36, 37 ausgebildet. Auch diese stützen sich außenumfangseitig gegen die Innenwandung des Zylinders der entsprechenden Seitenscheibe 24 (oder 25) ab.It can also be seen from the drawing that the respective end shoes 18a, 18b, 18c, 18d have, on the outer circumference, sliding surfaces 27a, 27b, 27c, 27d which bear against the inner wall of a cylindrical region of one of the side disks 24 (or 25). In the same way as the end shoes 18a, 18b, 18c, 18d, the sliding shoes 28, 29, 30, 31, 32, 33, 34, 35, 36, 37 are formed. These are also supported on the outer circumference side against the inner wall of the cylinder of the corresponding side window 24 (or 25).

Diese Gleitflächen 27a, 27b, 27c, 27d der Endschuhe 18a, 18b, 18c, 18d sowie die nicht mit Bezugszeichen versehenen Gleitflächen der Gleitschuhe 28, 29, 30, 31, 32, 33, 34, 35, 36, 37 stellen zum einen sicher, dass die Federsätze 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 unter geringer Reibung und ohne Verkanten komprimiert werden, wenn Primär- und Sekundärelemente 24, 25, 26 gegeneinander verdreht werden. Darüber hinaus ist deren Umfangserstreckung im vorliegenden Ausführungsbeispiel so bemessen, dass deren einander zugewandten Stirnflächen in Stoßkontakt treten, bevor die einzelnen Schraubenfedern der Federsätze 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 auf Block gehen. Sie legen somit die maximale Stauchung α der Federsätze 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 fest. Durch diese Maßnahme wird eine Zerstörung der Schaubenfedern bei hohen Drehmomenten verhindert.These sliding surfaces 27a, 27b, 27c, 27d of the end shoes 18a, 18b, 18c, 18d and the non-referenced sliding surfaces of the sliding shoes 28, 29, 30, 31, 32, 33, 34, 35, 36, 37 ensure on the one hand in that the spring sets 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 are compressed under low friction and without tilting when primary and secondary elements 24, 25, 26 are rotated against each other. In addition, the circumferential extent is dimensioned in the present embodiment so that their facing end faces come into shock contact before the individual coil springs of spring sets 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 on Go block. They thus determine the maximum compression α of the spring sets 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 fixed. By this measure, a destruction of the coil springs is prevented at high torques.

Es ist für den Fachmann ohne weiteres ersichtlich, dass dieses Ausführungsbeispiel Gleitflächenabmessungen zeigt, die rein optional zu verstehen sind. Selbstverständlich kann insbesondere deren Umfangserstreckung auch kürzer gewählt werden, wenn ein auf Block gehen der Federn aufgrund der auftretenden Drehmomente entweder nicht möglich oder eine Zerstörung der Federn nicht zu erwarten ist.It will be readily apparent to those skilled in the art that this embodiment shows sliding surface dimensions that are purely optional. Of course, in particular their circumferential extent can also be chosen shorter, if a go to block the springs due to the torques occurring either not possible or destruction of the springs is not expected.

In einem weiteren Ausführungsbeispiel der Erfindung sind die Endschuhe für einen Torsionsschwingungsdämpfer nicht U-förmig ausgebildet, sondern in anderer Weise an den Torsionsschwingungsdämpfer angepasst. Figur 3 zeigt eine perspektivische Darstellung eines derartigen Endschuhs 218.In a further embodiment of the invention, the end shoes for a torsional vibration damper are not U-shaped, but adapted in another way to the torsional vibration damper. FIG. 3 shows a perspective view of such an end shoe 218.

Der Endschuh 218 ist mit zwei Anschlagnasen 211, 212 versehen, welche Anstoßpunkte für die Stirnfläche des zugehörigen Federelements bilden. Sie verhindern, dass das Federelement mit seiner Stirnseite durch die Stirnfläche des Endschuhs 218 nach vorne hindurchgleitet und das Federelement so seine Führung verliert. Auf der der Rotationsachse des Torsionsschwingungsdämpfers abgewandten Seite weist der Endschuh 218 eine Gleitfläche 227 auf, an deren Innenseite das Federelement entlang gleitet. Die Ausdehnung dieser Gleitfläche 227 ist in Umfangsrichtung des Torsionsschwingungsdämpfers vorzugsweise so bemessen, dass bei maximaler Stauchung der Federelemente deren Enden weiterhin durch die Gleitfläche 227 vom radial außenliegenden Teil des Hohlraums abgeschirmt werden, so dass ein Verkanten der Federwindungen an der Hohlraumwandung sowie die damit verbundene Reduktion der Dämpfungswirkung vermieden wird.The end shoe 218 is provided with two stop lugs 211, 212, which form abutment points for the end face of the associated spring element. They prevent the spring element slides with its front side through the end face of the shoe 218 forward and the spring element loses its leadership. On the side facing away from the axis of rotation of the torsional vibration damper, the end shoe 218 has a sliding surface 227, on the inside of which the spring element slides along. The extent of this sliding surface 227 is preferably dimensioned in the circumferential direction of the torsional vibration damper that at maximum compression of the spring elements whose ends are further shielded by the sliding surface 227 from the radially outer part of the cavity, so that tilting of the spring coils on the cavity wall and the associated reduction the damping effect is avoided.

Einen Querschnitt durch den Torsionsschwingungsdämpfer, bei welchem der Endschuh 218 gemäß der Figur 3 eingesetzt ist, gibt Figur 4 wieder. Hierin bilden der vordere Teil des Mitnehmers des Sekundärelements 250 sowie der hintere Teil dieses Mitnehmers 251 gemeinsam den Mitnehmer des Sekundärelements. Auf diesen ist der Endschuh 218 aus Figur 3 aufgesetzt. Er kann gegebenenfalls auch befestigt sein. Dessen Stirnfläche ist in U-Form ausgeführt, so dass der Mitnehmer 219 des Primärelements 210 durch den Endschuh 218 hindurchgreifen kann, ohne mit diesem in Berührung zu kommen. Statt dessen trifft der Mitnehmer 219 direkt auf das Federelement 214 auf, so dass keine Übergabegeräusche entstehen. Der Hohlraum, in welchem die Federelemente sich bewegen, wird durch Zusammenfügen der vorderen Seitenscheibe 225 und der hinteren Seitenscheibe 224 gebildet.A cross section through the torsional vibration damper, in which the end shoe 218 is inserted according to the figure 3, Figure 4 again. Here form the front part of the driver of the secondary element 250 and the rear part of this driver 251 together the driver of the secondary element. On this, the end shoe 218 of Figure 3 is placed. If necessary, it can also be attached. Its end face is designed in a U-shape, so that the driver 219 of the primary element 210 can reach through the end shoe 218 without coming into contact therewith. Instead, the driver 219 hits directly on the spring element 214, so that no transfer noise occurs. The cavity in which the spring elements move is formed by joining the front side plate 225 and the rear side plate 224.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

33
Torsionsschwingungsdämpfertorsional vibration damper
55
Federsatzspring set
66
Federsatzspring set
77
Federsatzspring set
88th
Federsatzspring set
99
Federsatzspring set
1010
Federsatzspring set
1111
Federsatzspring set
1212
Federsatzspring set
1313
Federsatzspring set
1414
Federsatzspring set
1515
Federsatzspring set
1616
Federsatzspring set
17a17a
Mitnehmer Sekundärelement (Vorderteil)Driver secondary element (front part)
17b17b
Mitnehmer Sekundärelement (Vorderteil)Driver secondary element (front part)
17a'17a '
Mitnehmer Sekundärelement (Hinterteil)Driver secondary element (rear part)
17b'17b '
Mitnehmer Sekundärelement (Hinterteil)Driver secondary element (rear part)
18a18a
Endschuhend shoe
18b18b
Endschuhend shoe
18c18c
Endschuhend shoe
18d18d
Endschuhend shoe
19a19a
Mitnehmer PrimärelementDriver primary element
19b19b
Mitnehmer PrimärelementDriver primary element
2424
hintere Seitenscheibe (Sekundärelement)rear side window (secondary element)
2525
vordere Seitenscheibe (Sekundärelement)front side window (secondary element)
2626
Mittelscheibe (Primärelement)Center disc (primary element)
27a27a
Gleitfläche EndschuhSliding surface end shoe
27b27b
Gleitfläche EndschuhSliding surface end shoe
27c27c
Gleitfläche EndschuhSliding surface end shoe
27d27d
Gleitfläche EndschuhSliding surface end shoe
2828
Gleitschuhshoe
2929
Gleitschuhshoe
3030
Gleitschuhshoe
3131
Gleitschuhshoe
3232
Gleitschuhshoe
3333
Gleitschuhshoe
3434
Gleitschuhshoe
3535
Gleitschuhshoe
3636
Gleitschuhshoe
3737
Gleitschuhshoe
αα
maximale Stauchungmaximum compression
211211
Anschlagnasestop lug
212212
Anschlagnasestop lug
218218
Endschuhend shoe
227227
Gleitfläche EndschuhSliding surface end shoe
210210
Primärelementprimary element
214214
Federelementspring element
218218
Endschuhend shoe
219219
Mitnehmer PrimärelementDriver primary element
224224
hintere Seitenscheibe (Sekundärelement)rear side window (secondary element)
225225
vordere Seitenscheibe (Sekundärelement)front side window (secondary element)
250250
vorderer Teil Mitnehmer Sekundärelementfront part driver secondary element
251251
hinterer Teil Mitnehmer Sekundärelementrear part driver secondary element

Claims (12)

  1. Torsional vibration damper (3) having a drive-input-side primary element (26; 210) which has at least one primary driver (19a, 19b; 219) and having a drive-output-side secondary element (24, 25; 224, 225) which has at least one secondary driver (17a, 17a'; 17b, 17b'; 250, 251), which primary driver (19a, 19b; 219) and secondary driver (17a, 17a'; 17b, 17b'; 250, 251) are rotatable relative to one another about a neutral position counter to at least one spring element (5, 6, 7, 8, 9, 10; 11, 12, 13, 14, 15, 16; 214) which is provided between the primary driver (19a, 19b; 219) and the secondary driver (17a, 17a'; 17b, 17b'; 250, 251), and having end shoes (18a, 18b, 18c, 18d; 218) which are arranged at the end side of the respective spring element (5, 6, 7, 8, 9, 10; 11, 12, 13, 14, 15, 16; 214), with at least one of the end shoes (18a, 18b, 18c, 18d; 218) being designed such that, when a threshold relative rotational angle with respect to the neutral position is reached, at least one of the drivers (19a, 19b; 219) comes into direct contact with the spring element (5, 6, 7, 8, 9, 10; 11, 12, 13, 14, 15, 16; 214) while bypassing the at least one end shoe (18a, 18b, 18c, 18d; 218), with the at least one end shoe (18a, 18b, 18c, 18d; 218) and/or the at least one driver (19a, 19b; 219) being designed such that the at least one driver (19a, 19b; 219) remains in direct contact with the spring element (5, 6, 7, 8, 9, 10; 11, 12, 13, 14, 15, 16; 214) for as long as the threshold relative rotational angle is exceeded,
    characterized in that the at least one end shoe (18a, 18b, 18c, 18d; 218) does not at any time during the damping process come directly into contact with the associated driver (19a, 19b; 219).
  2. Torsional vibration damper (3) according to Claim 1,
    characterized in that the at least one end shoe (18a, 18b, 18c, 18d; 218) has a recess through which the corresponding driver (19a, 19b; 219) can be passed.
  3. Torsional vibration damper (3) according to one of the preceding claims,
    characterized in that the at least one of the end shoes (18a, 18b, 18c, 18d; 218) has a U-shaped, V-shaped or L-shaped cross section perpendicular to the rotational direction, and in that the at least one of the drivers (19a, 18b, 219) can be passed through the two limbs of the U-shape or V-shape or past the single limb of the L-shape.
  4. Torsional vibration damper (3) according to one of the preceding claims,
    characterized in that the at least one of the end shoes (18a, 18b, 18c, 18d; 218) has provided on it at least one device for fastening it to the spring element (5, 6, 7, 8, 9, 10; 11, 12, 13, 14, 15, 16; 214), which device is preferably designed as a retaining lug.
  5. Torsional vibration damper (3) according to one of the preceding claims,
    characterized in that the at least one of the end shoes (18a, 18b, 18c, 18d; 218) has attached to it a fastening device which connects the at least one end shoe (18a, 18b, 18c, 18d; 218) to different coil springs, which are arranged one inside the other, of the spring element (5, 6, 7, 8, 9, 10; 11, 12, 13, 14, 15, 16; 214).
  6. Torsional vibration damper (3) according to one of the preceding claims,
    characterized in that the at least one end shoe (18a, 18b, 18c, 18d; 218) is fastened to at least one of the other drivers (17a, 17a'; 17b, 17b' ; 250, 251).
  7. Torsional vibration damper (3) according to one of the preceding claims,
    characterized in that the at least one end shoe (18a, 18b, 18c, 18d; 218) has at least one stop device for at least one of the spring elements (214), which stop device is preferably designed as a stop lug (211, 212).
  8. Torsional vibration damper (3) according to one of the preceding claims,
    characterized in that the at least one end shoe (18a, 18b, 18c, 18d; 218) has, at its side facing away from the rotational axis of the torsional vibration damper (3), a sliding face (27a, 27b, 27c, 27d; 227).
  9. Torsional vibration damper (3) according to one of the preceding claims,
    characterized in that, in the at least one end shoe (18a, 18b, 18c, 18d; 218), that side of the end shoe (18a, 18b, 18c, 18d; 218) which faces towards the lateral surface of the spring element at least partially surrounds the spring element (5, 6, 7, 8, 9, 10; 11, 12, 13, 14, 15, 16; 214).
  10. Torsional vibration damper (3) according to one of the preceding claims,
    characterized in that the at least one of the end shoes (18a, 18b, 18c, 18d; 218) is produced from plastic.
  11. End shoe (18a, 18b, 18c, 18d; 218) for a torsional vibration damper (3) according to one of the preceding claims, characterized in that the end shoe (18a, 18b, 18c, 18d; 218) has a recess through which a driver (19a, 18b; 219) can be passed.
  12. End shoe (18a, 18b, 18c, 18d; 218) according to Claim 11, characterized in that the end shoe (18a, 18b, 18c, 18d; 218) has a U-shaped, V-shaped or L-shaped cross section perpendicular to the rotational direction, and in that the driver (19a, 19b; 219) can be passed through the two limbs of the U-shape or V-shape or past the single limb of the L-shape.
EP20040008581 2004-04-08 2004-04-08 Torsional vibration damper Expired - Lifetime EP1584839B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE200450005490 DE502004005490D1 (en) 2004-04-08 2004-04-08 torsional vibration damper
EP20040008581 EP1584839B1 (en) 2004-04-08 2004-04-08 Torsional vibration damper

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20040008581 EP1584839B1 (en) 2004-04-08 2004-04-08 Torsional vibration damper

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EP1584839A1 EP1584839A1 (en) 2005-10-12
EP1584839B1 true EP1584839B1 (en) 2007-11-14

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Family Applications (1)

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EP20040008581 Expired - Lifetime EP1584839B1 (en) 2004-04-08 2004-04-08 Torsional vibration damper

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DE (1) DE502004005490D1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006059054B4 (en) 2006-12-14 2016-09-22 Borg Warner Inc. Torsional vibration damper with end shoes
DE102007022891A1 (en) 2007-05-14 2008-11-20 Borgwarner Inc., Auburn Hills Shoe with a spring position limitation or torsional vibration damper with such a shoe
CN113719552B (en) * 2021-08-12 2023-07-14 陕西航天动力高科技股份有限公司 Clutch assembly

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19522718B4 (en) 1994-07-01 2009-07-30 Luk Lamellen Und Kupplungsbau Beteiligungs Kg torsional vibration damper
DE19958814A1 (en) 1999-12-07 2001-06-13 Mannesmann Sachs Ag Device for absorbing vibration caused by rotation, comprising several spring units acting in opposite directions for reduction of impact
DE10133694A1 (en) 2000-07-27 2002-02-07 Luk Lamellen & Kupplungsbau Torsional vibration damper with transmission elements on both sides has intermediate element between control regions and circumferential ends of energy store
DE50206194D1 (en) 2002-06-15 2006-05-18 Borgwarner Inc Device for damping torsional vibrations

Also Published As

Publication number Publication date
EP1584839A1 (en) 2005-10-12
DE502004005490D1 (en) 2007-12-27

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